Reference

ABUniverse Little Kings diaper

v2 - Prompting

Main triggerwords:

abu littlekings, diaper

Sub tags:

print diaper, bear print, polka dot diaper, star print

front-print diaper, back-print diaper

peed diaper, wetness indicator, stained panties

v1 - Prompting

Main triggerwords:

abu littlekings, diaper

Sub tags:

front diaper, back diaper, peed diaper, wetness indicator, 

folded diaper, unfolded diaper, holding diaper, diaper under pantyhose, diaper changing,

print diaper, bear print, back-print diaper, polka dot diaper

If you want a more anime-style look, just add those tags to your negative prompt:

realistic, traditional media